5, 13, 29, 61, 125, 253, _____ 1 : 512 2 : 521 3 : 509 4 : 552 5 : None of these

5, 13, 29, 61, 125, 253, _____

1 : 512

2 : 521

3 : 509

4 : 552

5 : None of these
by

1 Answer

Answer :

Answer-3(509)

Explanation5 x2 +3 =13

13×2 +3=29

29×2+3=61 and so on..
by

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